Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0b447caa55dc38d…

MALICIOUS

PDF

74.6 KB Created: 2021-03-15 10:24:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 682b067f7e2d73acd7f7e768b9220631 SHA-1: f9db17885f9b50ae45be484d672848f3277845d7 SHA-256: f0b447caa55dc38d0ecdb9ba670f0dcf1e0c03c949e0bae22dd0803fd27ed11f
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The document body, though heavily obfuscated, appears to contain keywords related to 'Intermatic timer switch manual' and application metadata, likely as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ponafet.ru/wix?keyword=intermatic+timer+switch+manual PDF link annotation
    • http://mobile-media.moscow/87095045772selqh.pdfIn PDF document text
    • https://cdn.sqhk.co/fejovuwov/ggicyhe/desemidusutiwavuzomobu.pdfIn PDF document text
    • http://autobuff.xyz/xekomexipagosky81h.pdfIn PDF document text
    • https://cdn.sqhk.co/ribafesupuro/jevTsid/hockey_ball_pass_goal_3ds.pdfIn PDF document text
    • https://zipabuto.weebly.com/uploads/1/3/4/6/134659669/kibefuwe.pdfIn PDF document text
    • https://cdn.sqhk.co/lizasizova/hjicfrb/8486060556.pdfIn PDF document text
    • https://basitonivi.weebly.com/uploads/1/3/4/5/134584834/vajutaraxu_tatime_fimazodetejamav.pdfIn PDF document text
    • https://cdn.sqhk.co/lunapolakezo/xfhg7Rk/metropolismania_2_iso.pdfIn PDF document text
    • https://cdn.sqhk.co/wifinalimow/jahcdFV/lenovo_smart_clock_essential_review.pdfIn PDF document text
    • http://voztrans.ru/star_wars_soundtrack_torrentktw1s.pdfIn PDF document text
    • https://cdn.sqhk.co/jojikoxazew/DihCjhh/26224360134.pdfIn PDF document text
    • https://zifudaxoxatoj.weebly.com/uploads/1/3/5/3/135313713/8fe03ebb.pdfIn PDF document text
    • https://pezibufanijazox.weebly.com/uploads/1/3/4/6/134639202/revuz-refefoveravi.pdfIn PDF document text
    • http://saduzemed.mypressonline.com/vekifu.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwopaperuv/gcQifhj/24734145043.pdfIn PDF document text
    • http://pribor-poverka.site/busemijafijidagowopufe8otwg.pdfIn PDF document text
    • https://cdn.sqhk.co/xafazunusa/yibligj/99490338328.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxosutuku/iaggSjb/15395748529.pdfIn PDF document text
    • http://leadtop.co/vepozutiturawofixabixawxk6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://puribisipup.atwebpages.com/all_computer_shortcut_keys_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a7c7610-0dab-48f7-915d-89279f9be106/35181434276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c91522f9-0380-498a-8f00-4d09639b30db/59481608431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36de156d-84f2-4bc1-85a2-a966008b25e4/xojorodi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE712 5068 bytes
SHA-256: 74d0dcbd9234ab8b14b0d67a64bdea4716f7369358fd4676cf7e92c84eb6730b
font_01_sfnt_off0000f82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF82C 10648 bytes
SHA-256: 7e1e653de4cc0122b78fb15e23026c3cd8f9be70afcd465bd99d01e8d26d3e3d